6BR Berger Ballistic Program

[james]

I have a question about using the Berger Ballistic program. I have found if I input the information correctly it will get me pretty close to my dial ups at various distances. I was out a few days ago with my BAT 6BR and a Seekins 6.5 CM. My target was set at 600 yards. The Berger program confirmed 13 MOA for the Seekins and this turned out to be spot on.

I then inputted the 6BR information and it provided me with a reading of 14 MOA. After several shots off target I was finally able to dial in at 12 MOA. I checked my speeds with my friends Garmin so I was good to go there.

My question is why was my Berger calculation so far off with the BAT?

Thanks much!!

 

[HPMike800]

Different scopes? Sighting systems are not perfect.
Bad BC data?
Stability affects BC as well.

 

[james]

In regard to scopes I had a NF 12x42 on the BAT and a Sightron SIII 8x32 on the Seekins. I used the BC figures from Berger (105 Hybrid) and Hornady (147 ELD).

 

[muleystalker]

Go check your input info again that you put in for the BR. Remember garbage in.... garbage out. That would be the first place to start.

 

[james]

Just checked it again on the Berger BP, 600 yards 14.11 MOA.